80 points if you can answer all of them ! !

question 1
a soda company would like to provide a new flavor of soda to the customers. in order to know which flavor to sell, the company produces three different kinds of flavored soda, and randomly selects the towns that would sell the new sodas. the flavored soda that sells the quickest will be the new soda for the company to sell. is this sample likely to be biased or unbiased?
a. unbiased
b. biased

question 2
a school wants to know how the community feels about a merger with another school. the school surveys the parents of the students about the merger. is this sample likely to be biased or unbiased?
a. unbiased
b. biased

question 3
to find out whether the citizens of a city are willing to pay higher taxes to make improvements to the city's playgrounds, the city council randomly selects 500 citizens to be surveyed about the issue. is this sample of citizens likely to be biased or unbiased?
a. biased
b. unbiased

question 4
to determine whether voters would be willing to vote for a tax increase to improve the city's parks, the town mayor surveys 100 parents of children in the city's schools. why is this sample likely to be biased?
a. parents of school children are too busy to be bothered with surveys. b. there are not enough people in the sample.
c. the entire population of the city was not surveyed.
d. parents of school children would be more willing to pay to improve parks.

question 5
to determine whether voters would be willing to vote for a tax increase to improve the city's schools, the board of education surveys 500 parents of children in the city's schools. why is this sample likely to be biased?
a. parents of school children are too busy to be bothered with surveys. b. the entire population of the city was not surveyed.
c. parents of school children are more likely to be willing to pay more to improve schools.
d. there are not enough people in the sample.

you so much if you can .